Physics, asked by YAMI111, 1 year ago

plzzzzz answer this plźzzzzzzzz

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Answered by Amaanak

My friend i done the second option !!

Answered by madhu139

a)
The joule’s first law shows the relationship between heat produced by a flowing electric current through a conductor.

Q = I2 R T

Where,

Q indicates amount of heat,

I shows electric current

R is the amount of electric resistance in conductor

T denotes time

madhu139: b) Both the bulbs are connected in parallel. Therefore, potential difference across each of them will be same that is 220 V, Current drawn by the bulb of rating 100 W is given by

I=P/V

=100/220=0.4545...A

Similarly, current drawn by the bulb of rating 60 W is given by

I=P/V

=60/220=0.2727...A

∴ the total current drawn from the line =0.4545+0.2727=0.727A

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